Refactor error handling: use Error enum, update APIs

Replaces ErrorStatus with Error across all systems for consistency.
Renames ResourceBarrierData fields to camelCase.
Adds BindlessAccess enum and updates GetBindlessIndex API.
Updates method signatures, result types, and error checks.
Modernizes HLSL mesh shader syntax and fixes naming.
Improves code style and updates comments for clarity.

Ghost.Graphics/RenderGraphModule/RenderGraphContext.cs

@@ -47,6 +47,7 @@ internal sealed class RenderGraphContext : IRasterRenderContext, IComputeRenderC
 
     private readonly TextureFormat[] _rtvFormats;
     private TextureFormat _dsvFormat;
+    private int _rtvCount;
 
     private Handle<GraphicsBuffer> _activePerMaterialData;
     private Handle<GraphicsBuffer> _activePerMeshData;
@@ -82,6 +83,7 @@ internal sealed class RenderGraphContext : IRasterRenderContext, IComputeRenderC
         }
 
         _dsvFormat = dsvFormat;
+        _rtvCount = rtvFormats.Length;
     }
 
     public Handle<GPUResource> GetActualResource(Identifier<RGResource> resource)
@@ -145,7 +147,7 @@ internal sealed class RenderGraphContext : IRasterRenderContext, IComputeRenderC
                 VariantKey = shaderVariantKey,
                 PipelineOption = materialPipeline,
 
-                RtvFormats = _rtvFormats,
+                RtvFormats = _rtvFormats.AsSpan(0, _rtvCount),
                 DsvFormat = _dsvFormat,
             };